Disc sanding plate

Can you help? I am making a bench mounted disc sander out of an old motor from a pillar drill, I am trying to find a aluminum plate to mount on the shaft, anyone know were i can get hold of such a thing or do you have one I could purchase from you/

If you want a good flat disc you could buy a cheap diamond blade ( 30mm ) from toolstation , about £20 or try a local engineering firm too cut you one but it would need to be very well balanced or it woud just shake itself apart .

Thank for your ideas, I ended up making a disc out of ply and
turning it true after I attached it to the pulley wheel that I also
turned down, I even used the pillar and the drill bed from the drill
that tilts to any angle i require. Its cheep and cheerful but dose the
job just fine.

Good job Paul. Actually, I don’t have a lot of ideas. You can easily find out the aluminum plate from Amazon. On the other hand, you can search at the local marketplace. I hope this information helps you.